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Current fidelity susceptibility and condictivity of one- dimensional electrons with open and periodic boundary conditions

Temo Vekua, Hannover University

05.05.2015 at 14:00 

First I will introduce notion of ground state fidelity and corresponding susceptibility in quantum many-body systems and show some examples where it can capture second order phase transitions in one dimensional systems. I will as well discuss behavior of fidelity susceptibility across Berezinskii-Kosterlitz-Thouless phase transition.
Finally I will discuss experimentally measurable quantities that can be analysed theoretically with the help of fidelity susceptibility such as current conductivity.

H 107, Schellingstr. 4